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Anomalous crack region detection is a typical binary semantic segmentation task, which aims to detect pixels representing cracks on pavement surface images automatically by algorithms. Although existing deep learning-based methods have…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Lei Xu , Moncef Gabbouj

We address the problem of abnormal event detection from trajectory data. In this paper, a new adversarial approach is proposed for building a deep neural network binary classifier, trained in an unsupervised fashion, that can distinguish…

Machine Learning · Computer Science 2019-04-05 Pankaj Raj Roy , Guillaume-Alexandre Bilodeau

With video-level labels, weakly supervised temporal action localization (WTAL) applies a localization-by-classification paradigm to detect and classify the action in untrimmed videos. Due to the characteristic of classification,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Ziqiang Li , Yongxin Ge , Jiaruo Yu , Zhongming Chen

Deep neural networks are vulnerable to small input perturbations known as adversarial attacks. Inspired by the fact that these adversaries are constructed by iteratively minimizing the confidence of a network for the true class label, we…

Machine Learning · Computer Science 2021-12-17 Motasem Alfarra , Juan C. Pérez , Ali Thabet , Adel Bibi , Philip H. S. Torr , Bernard Ghanem

Self-supervised learning of graph neural networks (GNN) is in great need because of the widespread label scarcity issue in real-world graph/network data. Graph contrastive learning (GCL), by training GNNs to maximize the correspondence…

Machine Learning · Computer Science 2021-11-04 Susheel Suresh , Pan Li , Cong Hao , Jennifer Neville

This research addresses the need for high-definition (HD) maps for autonomous vehicles (AVs), focusing on road lane information derived from aerial imagery. While Earth observation data offers valuable resources for map creation,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Willow Liu , Shuxin Qiao , Kyle Gao , Hongjie He , Michael A. Chapman , Linlin Xu , Jonathan Li

It has been well demonstrated that adversarial examples, i.e., natural images with visually imperceptible perturbations added, generally exist for deep networks to fail on image classification. In this paper, we extend adversarial examples…

Computer Vision and Pattern Recognition · Computer Science 2017-07-24 Cihang Xie , Jianyu Wang , Zhishuai Zhang , Yuyin Zhou , Lingxi Xie , Alan Yuille

Active learning aims to alleviate the amount of labor involved in data labeling by automating the selection of unlabeled samples via an acquisition function. For example, variational adversarial active learning (VAAL) leverages an…

Machine Learning · Computer Science 2024-08-26 Zongyao Lyu , William J. Beksi

In recent years, the field of intelligent transportation has witnessed rapid advancements, driven by the increasing demand for automation and efficiency in transportation systems. Traffic safety, one of the tasks integral to intelligent…

Computer Vision and Pattern Recognition · Computer Science 2023-10-09 Wei Zhao , Qiyu Wei , Zeng Zeng

Generic Image recognition is a fundamental and fairly important visual problem in computer vision. One of the major challenges of this task lies in the fact that single image usually has multiple objects inside while the labels are still…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Zhiqiang Shen , Zhankui He , Wanyun Cui , Jiahui Yu , Yutong Zheng , Chenchen Zhu , Marios Savvides

Adversarial attacks on a convolutional neural network (CNN) -- injecting human-imperceptible perturbations into an input image -- could fool a high-performance CNN into making incorrect predictions. The success of adversarial attacks raises…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Yiran Li , Junpeng Wang , Takanori Fujiwara , Kwan-Liu Ma

Deep convolutional neural networks (CNNs) have shown excellent performance in object recognition tasks and dense classification problems such as semantic segmentation. However, training deep neural networks on large and sparse datasets is…

Computer Vision and Pattern Recognition · Computer Science 2017-12-25 Lorenz Berger , Eoin Hyde , M. Jorge Cardoso , Sebastien Ourselin

We present the first generative adversarial network (GAN) for natural image matting. Our novel generator network is trained to predict visually appealing alphas with the addition of the adversarial loss from the discriminator that is…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Sebastian Lutz , Konstantinos Amplianitis , Aljosa Smolic

In this paper we propose an attentive recurrent generative adversarial network (ARGAN) to detect and remove shadows in an image. The generator consists of multiple progressive steps. At each step a shadow attention detector is firstly…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Bin Ding , Chengjiang Long , Ling Zhang , Chunxia Xiao

The goal of 2D tomographic reconstruction is to recover an image given its projections from various views. It is often presumed that projection angles associated with the projections are known in advance. Under certain situations, however,…

Image and Video Processing · Electrical Eng. & Systems 2021-11-16 Mona Zehni , Zhizhen Zhao

We propose adversarial constrained-CNN loss, a new paradigm of constrained-CNN loss methods, for weakly supervised medical image segmentation. In the new paradigm, prior knowledge is encoded and depicted by reference masks, and is further…

Computer Vision and Pattern Recognition · Computer Science 2020-05-04 Pengyi Zhang , Yunxin Zhong , Xiaoqiong Li

We propose a generative Causal Adversarial Network (CAN) for learning and sampling from conditional and interventional distributions. In contrast to the existing CausalGAN which requires the causal graph to be given, our proposed framework…

Machine Learning · Computer Science 2020-09-23 Raha Moraffah , Bahman Moraffah , Mansooreh Karami , Adrienne Raglin , Huan Liu

Existing deep learning methods of video recognition usually require a large number of labeled videos for training. But for a new task, videos are often unlabeled and it is also time-consuming and labor-intensive to annotate them. Instead of…

Computer Vision and Pattern Recognition · Computer Science 2018-05-14 Feiwu Yu , Xinxiao Wu , Yuchao Sun , Lixin Duan

Convolutional neural networks (CNN) define the state-of-the-art solution on many perceptual tasks. However, current CNN approaches largely remain vulnerable against adversarial perturbations of the input that have been crafted specifically…

Computer Vision and Pattern Recognition · Computer Science 2024-03-04 Peter Lorenz , Margret Keuper , Janis Keuper

The state-of-the-art approaches in Generative Adversarial Networks (GANs) are able to learn a mapping function from one image domain to another with unpaired image data. However, these methods often produce artifacts and can only be able to…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Hao Tang , Dan Xu , Nicu Sebe , Yan Yan